Properties of the Number 55650

Fifty-Five Thousand Six Hundred Fifty

Basics

Value: 55649 → 55650 → 55651

Parity: even

Prime: No

Previous Prime: 55639

Next Prime: 55661

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 ² × 7 × 53

Divisors: 1, 2, 3, 5, 6, 7, 10, 14, 15, 21

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1101100101100010

Octal: 154542

Duodecimal: 28256

Hexadecimal: d962

Square: 3096922500

Square Root: 235.902522241709

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Triangle T(n,k) of rencontres numbers (number of permutations of n elements with k fixed points). A8290

Triangle read by rows: T(n,k) = number of partial derangements, that is, the number of permutations of n distinct, ordered items in which exactly k of the items are in their natural ordered positions, for n >= 0, k = n, n-1, ..., 1, 0. A98825

Triangle of rencontres numbers. A8291

Rencontres numbers: number of permutations of [n] with exactly 4 fixed points. A475

Number of maximal subsets of {1..n} of which every subset has a different sum. A325865

Square array T(n,k) read by antidiagonals: coordination sequence for lattice D_n. A103903

Schoenheim bound L₁(n,n-5,n-6). A36837

a(n) = (binomial(n,5) - floor(n/5)) / 5. A215052

Column 8 of A286781. A286793

Coordination sequence for D₇ lattice. A8359